25020730 has 32 divisors (see below), whose sum is σ = 51995520. Its totient is φ = 8491200.

The previous prime is 25020727. The next prime is 25020731. The reversal of 25020730 is 3702052.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25020698 and 25020707.

It is not an unprimeable number, because it can be changed into a prime (25020731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5301 + ... + 8839.

It is an arithmetic number, because the mean of its divisors is an integer number (1624860).

Almost surely, 2^25020730 is an apocalyptic number.

25020730 is an abundant number, since it is smaller than the sum of its proper divisors (26974790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25020730 is a wasteful number, since it uses less digits than its factorization.

25020730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3654.

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 25020730 is about 5002.0725704452. The cubic root of 25020730 is about 292.4825713432.

Adding to 25020730 its reverse (3702052), we get a palindrome (28722782).

The spelling of 25020730 in words is "twenty-five million, twenty thousand, seven hundred thirty".